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Josh Ajima
Attended University of Virginia
Lives in Virginia, United States
54 followers|373,145 views
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Josh Ajima

Show-n-tell  - 
 
#3DBenchy on a freshly repaired Printrbot Metal Plus. Stock Cura setting for Metal Plus w/0.2 mm layer height. Printed gcode on Repetier-Host as I'm dialing in setting dropped sped to 50% so approximately 20 mm/sec print speed. White ColorFabb filament from PrintedSolid.

Decent but feel like this hardware should be able to do better.
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Henner Zeller's profile photoMichael Spano Jr's profile photoRalf Willi Schmidt's profile photo
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Try changing your layer height to .254 first layer and .2064 for all other layers. This will put the layer height in conjunction with the lead screw pitch to a full step per motor and will clean up the ribbing on the outer shell.

Also, are n you using Colorfabb XT? That tends to be a much different beast to print with compared to standard PLA. Slow and steady with that stuff for best results. 
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Starting 2015 out right w/ new article about #3DGumballGallery http://3dprintingindustry.com/2015/01/01/3d-printed-art-gumball-machine/
Thanks to all the designers/artists that contributed.
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Josh Ajima

Discussion  - 
 
Meet & greet w/ Sylvia Martinez from 4-5pm in room 1B. Standing room only keynote, sessions & book signing #vste14 
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Josh Ajima

Discussion  - 
 
In the dark this morning? Make an emergency LED light in #VSTE14 Hackerspace. Very limited supply!! By 3B, also check out the great sessions in 3B.

Solve real problems in your makerspace.
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Josh Ajima's profile photoGina Powell's profile photoKyle Dunbar's profile photoKris Elsie's profile photo
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You're the best Josh!
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Josh Ajima

➥ 3D printing  - 
 
PRINT IT FORWARD: 3D PRINTER FUNDRAISING KIT
I want to help put more 3D printers in schools. My idea is to send a bunch of 3D printed models to an educator, for free, to kickstart their fundraising. They then buy a printer and print a bunch of models for someone else.

I'm ready to go with a set of prints. If you know an educator that might be interested please share the link. (US K12 Public School)
Do you want a 3D printer for your school or classroom? Do you want your students to have the power to turn their ideas into reality? Is cost the only thing holding you back? I want to help by sendi...
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Josh Ajima

Questions/Help  - 
 
Help Manually Setting Bed Plane

I have a #Printrbot Metal Simple with the Z-probe. At the start of a print, I run a G29 command to probe the bed level and determine the bed plane. This reports values in the form.
< 11:34:56 AM: Bed x: 10 y: 142.40 z: 0.42
< 11:35:04 AM: Bed x: 10 y: 10 z: 1.63
< 11:35:12 AM: Bed x: 142.40 y: 10 z: 1.72

These values will vary +/- 0.05 mm between calibration runs.
This works well enough for most prints but are not quite repeatable enough for print in place designs with very tight tolerances or low layer height prints where a 0.1mm height difference between corners may cause the print to fail.

I would like to manually set the z plane by setting the bed plane in Gcode at the start of the print. ie. Manually set the z value for 3 points as above. Any hints on what gcode to use to do this?

Is it possible to have the bed probed at more points? I noticed that the Afinia leveling scripts tests 9 points. Code suggestions?

Thanks,
Josh
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Matthew Satterlee's profile photoJosh Ajima's profile photoThantiK's profile photopaul wallich's profile photo
6 comments
 
Stupid question: do you know for sure that the variation is in the probe? You're asking the bed bearings and the cantilevered Z assembly to have slop of less than 2 thicknesses of a human hair. Even things like the weight of filament above the extruder could have measurable effects on that order.
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Have him in circles
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Josh Ajima

Discussion  - 
 
I started the DesignMakeGame.com blog to document using digital fabrication tools like 3D printing for gaming. Haven't been updating it much as my work schedule has conflicted with HMGS conventions. Is there anyone interested in being a contributor? It is a wordpress.com blog and I can add others as authors. The domain is up for renewal and I need a good reason to pay to renew it.
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Josh Ajima

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Article about The Incredible 3D Printing Gumball Gallery in Vending Times. Funny but the writing is actually more professional than the majority of 3D printing websites. #3DPrinting #3DGumballGallery
TAGS: bulk vending, vending machine, capsule toys, vending novelties, 3D-Printing, Josh Ajima, Virginia Society for Technology in Education, 3D-printed bulk vending toys, Technology in Education, 3D Gumball Gallery, Designers and Artists Series No. 1,
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Josh Ajima

➥ 3D printing  - 
 
Happy 2015!
Couple of quick 3D models for your New Years celebrations.
http://www.thingiverse.com/thing:613809
http://www.thingiverse.com/thing:613837

Learn how to customize your own gimbal at http://designmaketeach.com/2014/05/06/3d-design-personalize-a-gimbal/
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Josh Ajima

Discussion  - 
 
Tom Lauwers from Birdbraintech is here in the Hackerspace building Hummingbird Duo robots. come down for hands on with the new Hummingbird Duo that is programmable in everything from Scratch to Arduino.
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Josh Ajima

Discussion  - 
 
I hereby declare the #VSTE14 Hackerspace open! Come show off something that you or your students make. Tons of maker materials. Come make something awesome!
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Josh Ajima

➥ 3D printing  - 
 
Hack Your Toys for Halloween!

This post is to encourage kids to design and 3D print costumes and accessories for their toys. Halloween is a great time of year for this sort of design challenge but it is really suitable for a number of holidays and special events. Imagine if your toys were going to a comic convention and wanted to cosplay as their favorite superhero. (Educators could ask students to convert their toys into famous historical or literary character.)

Some of my favorite characters to work with are from LEO the Maker Prince by Carla Diana. The 3D printable models from the story allow fans to extend the adventures of the characters. Look for the design at http://www.thingiverse.com/leothemakerprince/.

I've published my costume for Sheep at http://www.thingiverse.com/thing:499952. Included in the photo gallery are some photos of costume prototypes for Carla.

The Maker Faire Robot by LeFabShop is able to cosplay Baymax from the movie Big Hero 6 simply by being printed in white http://www.thingiverse.com/thing:331035.

The Athena Makeover by Zheng3 is also great for Barbie figures that want to cosplay characters from Percy Jackson films. http://www.thingiverse.com/thing:269721

So, what are you waiting for? Start Hacking Your Toys!

Be sure to share your photos and designs.
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Have him in circles
54 people
Sandi Margolis's profile photo
Martin Johnaon's profile photo
Gizmobay's profile photo
Kevin Gushue's profile photo
Jessica Henricks's profile photo
Eric De Boer's profile photo
Péter Varga's profile photo
Shawn Reis's profile photo
Nikki Jones's profile photo
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  • University of Virginia
    Chemistry, 1990 - 1995
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